pehaps their destiny will fade out like tyrrell....once a legendary name in F1 only to fade into the 90's
I hope your wrong. 
I hope you're wrong too. (Not you Tex, I agree with you, I hope Forti_Corse is wrong).
Williams, what can I say. I remember those "Canon" sponsored Williams and later those "Rothmans" sponsored cars. Too many memories and although Williams will never be like they used to be, it would be assamed if they were to go. I remember the years when Ferrari were crap and it was McLaren Vs Williams. Yep I always went for the Williams.

But with Williams I always had a soft spot. Even back in 1997 when Michael Schumacher could of won his first WDC for Ferrari but lost it to Jacques Villenueve (Williams), I never really got too worked up about it. (Even though I dont like Jacques, I was more happy for his team winning).
But without manufacturer backing it is going to be hard for Williams to return to their winning ways. Williams is powered by Toyota. Toyota has their own team which although look promising, all the money will go to that team and very little to Williams F1. Perhaps if Ford were to return to F1 as an engine supplier, then Williams would be the best tea, to supply an engine to. This is given Williams is the only by far most experienced and richest teams left out of the private teams that it would make sense for Ford to supply Williams. Also if Ford were wanting to re-enter F1, given their current status as a car manufacturer (Given the hard times they are facing right now). It would be cheaper for them to just enter as an engine supplier for Williams, rather than a whole team of their own like Renault, BMW, Toyota. Ferrari and Honda. Now imagine that and how strong they would be. Williams-Ford. Williams has won championships before (And with Ford engines may I say) and Ford has won many championships and races as an engines supplier with many teams. Some of these teams being Williams, McLaren, Benetton, Brabham and Tyrell. Sadly though this idea of Ford coming back to F1 and then powering Williams will probably just never happen. It would be a nice dream however.